Leonardo da Vinci's anatomical drawings, such as those of the shoulder shown here, may have been undertaken primarily out of an artistic desire to perfect his representation of the human body. They were influenced by the prevailing dogma of medical anatomy, as established by the Greek anatomist Galen some 1,400 years earlier. Leonardo's focus on drawing from life — in particular from his first-hand observation of human dissection — clearly informed his later works. The accuracy of his representations of human anatomy often surpassed that of contemporary medical experts. A massive book containing all of Leonardo's sketches, together with an analysis of the artist's work — Leonardo da Vinci 1452–1519: The Complete Paintings and Drawings (Taschen) by Frank Zöllner — has recently been published.